Based on your subject and the content of your post, you are apparently asking two different questions. It is really hard to determine what is desired when dealing with a situation such as this. You need to make your post very clear.
If you want the Snapfish program, you go to the Snapfish website, download it, and install it on your computer:
http://www.snapfish.com/
If you want to install a printer with wireless connection, you should refer to the user manual for the printer to ensure you proceed step-by-step in accordance with the procedure established by the manufacuter. If you don't have the user manual, then
go to the printer manufacturer's website and download the manual.
Refer to the info @
http://windows.microsoft.com/en-US/windows-vista/Install-a-printer-on-a-home-network for general information on installing a printer on a home network.
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